JPH11280318A - Keyless entry device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts of a keyless entry device and prevent occurrence of actuation sound. SOLUTION: The lock control circuit of the keyless entry device is provided with a first timer starting to work when it receives an actuation signal of a switch device 24 and counting a first specified time, a second timer starting to work when it receives an actuating signal of the switch device 24 and counting a second specified time, and a third timer counting a third specified time after the second timer has counted the second specified time. A lock control circuit imparts an actuation signal to a keyhole lighting device until the first specified time that the first timer counts elapses, after it has received the actuation signal of the switch device and then, the circuit blocks the actuation signal to the keyhole lighting device during the third specified time interval that the third timer counts, when the second specified time that the second timer counts elapses, after the actuation signal of the switch device 24 has been received.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a keyless entry device, and more particularly to a keyless entry device capable of unlocking a door by operating a handle and recognizing a digit input by operating the handle.

[0002]

2. Description of the Related Art For example, as shown in Japanese Patent Publication No. 3-62873, a keyless entry device for unlocking a door lock device by operating a door handle provided on a door of an automobile is known. As shown in FIG. 7, the keyless entry device includes an outer handle 1 rotatably provided on a door 12 of an automobile, a handle switch 2 that is turned on or off by operating the outer handle 1 in an unlatching direction, and a handle switch 2. A waveform shaping circuit 3 for shaping the waveform of the operation signal, a computer 5 for receiving an operation signal of the handle switch 2 through the input / output bus 4, and a single light-emitting body such as an LED provided on the door 12 or a speaker, a buzzer, etc. An alarm device 10 such as one sounding body, a switching element 9 for controlling a drive signal of the alarm device 10, and an AND circuit 8 for applying a control signal to a gate of the switching element 9
And an actuator 11 such as an electromagnetic solenoid provided on the door lock device and receiving an operation signal from the input / output bus 4.
And a pulse oscillation circuit 6 connected between one input terminal of the AND circuit 8 and the input / output bus 4. The other input terminal of the AND circuit 8 is connected to the input / output bus 4 and the pulse number control circuit 7 of the computer 5 through a wiring 7 '.
Output terminal.

When the handle switch 2 is operated by operating the outer handle 1, the handle switch 2 generates a reading signal for detecting that the outer handle 1 is first operated once in the unlatching direction. Handle switch 2
Is input to the computer 5, the computer 5 applies a trigger signal to the pulse oscillation circuit 6, so that the pulse oscillation circuit 6 starts generating pulses at fixed intervals. At the same time, the pulse number control circuit 7 emits an output, and the pulse of the pulse oscillation circuit 6 and the output of the pulse number control circuit 7 are input to the AND circuit 8. The AND circuit 8 generates the same pulse output as the pulse of the pulse oscillation circuit 6, turns on the switching element 9 intermittently, and intermittently turns on the alarm 1 at the same cycle as the pulse of the pulse oscillation circuit 6.
Activate 0.

[0004] As shown in FIG.
If, for example, 10 pulses are taken as one set and the encryption signal is a four-digit number, for example, after a predetermined time t, four pulse sets equal to the number of digits of the encryption signal are issued. For example, if the code is a four-digit number of 3, 2, 7, and 9, when the alarm 10 starts operating, the operator counts the light emission or sounding pulse, and as shown in FIG. First, 3 of the first pulse set
When the third pulse is issued, the outer handle 1 is operated only once in the unlatching direction. The output of the pulse number control circuit 7 is stopped by the operation signal of the handle switch 2 by the operation of the outer handle, the switching element 9 is turned off, the light emission or sound generation is stopped, and the input is performed by the operator by his / her own operation. At the same time, the computer 5 counts and stores the pulse number 3 up to the time point delimited by the stop of the output of the pulse number control circuit 7.

After a predetermined time has elapsed, the pulse oscillation circuit 6
And the pulse number control circuit 7 emits an output, and the illuminant or the alarm 10 starts to operate intermittently. As described above, the operator counts the number of pulses of the light emission or sound emission and counts the second pulse. The outer handle 1 is operated only once in the unlatching direction when the above pulse appears, the light emission or sounding pulse is stopped, and the computer 5 counts and stores the number of pulses in the second set up to that point.

Similarly, when the outer handle 1 is operated in the unlatch direction only once with the seventh pulse in the third pulse set and once with the ninth pulse in the fourth pulse set, the light emission or sounding pulse of the alarm 10 is generated. As shown in FIG. 2c, the number of pulses becomes 3, 2, 7, and 9, and the number counted and stored by the computer 5 becomes the same.
Compares the numbers 3, 2, 7, and 9 with pre-stored encrypted numbers, and when they match, outputs an output to the actuator 11, which operates to release the door lock.

[0007]

In a conventional keyless entry device, an alarm 10 such as a light-emitting body or a sounding body is connected to a door 1.
2, it is difficult not only to secure a place for installing the alarm 10 but also to use the alarm 1
0 increases the number of parts and the cost. Further, since the buzzer is activated every time the handlebar switch 2 is operated, there is a problem that noise is generated and the reciting numeral is known to others.

Accordingly, an object of the present invention is to provide a keyless entry device having a small number of parts and generating no operation noise.

[0009]

SUMMARY OF THE INVENTION A keyless entry device according to the present invention includes a switch device for generating an operation signal by operating a handle for opening a door, a lock device for locking and unlocking the door, and a lock device for mechanically controlling the lock device. A cylinder lock device to be locked and unlocked, a keyhole illumination device provided around the keyhole of the cylinder lock device, an operation signal of the switch device is received, an operation signal is given to the keyhole illumination device, and a predetermined signal is transmitted from the switch device. And a lock control circuit for giving an unlocking signal to the lock device when the input signal is received. The lock control circuit starts operating when receiving an activation signal of the switch device and counts a first fixed time. The first timer starts operation when receiving an activation signal of the switch device and generates a second timer. A second timer is provided for counting a fixed time, and a third timer is provided for counting a third fixed time after the second timer has counted the second fixed time. The lock control circuit, after receiving the activation signal of the switch device, performs the first
An operation signal is given to the keyhole lighting device until the first fixed time counted by the timer of the first timer has elapsed, and the third timer counts when the second fixed time counted by the second timer has elapsed. The activation signal to the keyhole lighting device is blocked for a third fixed time. The first fixed time is longer than the second fixed time. The second timer blocks the activation signal to the keyhole illumination device for the third predetermined time when the second predetermined time has elapsed after receiving the activation signal of the switch device, so that the traffic noise is high. Even below, it is possible to recognize the completion of digit input by turning off the keyhole lighting device.

In the embodiment of the present invention, when the keyhole lighting device is constituted by the colored light emitting diodes, it is possible to clearly distinguish the lighting / extinguishing state of the keyhole lighting device even in daylight. The first timer and the second timer are reset when the switch device is actuated before the second timer counts the second fixed time, and are again reset for the first fixed time and the second fixed time, respectively. This is a retrigger timer that starts counting. The lock control circuit has a code counter for counting the number of codes of each digit of the reciting number, and stores the count value of the code counter when the second timer has counted for a second fixed time. The lock control circuit has a digit counter for counting the digit number of the personal identification number. When the count value of the code counter is stored, the count value of the digit counter is incremented. The second timer increments the count value of the digit counter and is reset when the count value has not reached n digits, and starts counting again for the second fixed time. When the lock control circuit gives the unlocking signal to the lock device, the keyhole lighting device is turned off and the code counter is cleared. The digit counter is cleared when the lock control circuit applies an unlock signal to the lock device.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a keyless entry device according to the present invention will be described below with reference to FIGS.

As shown in FIGS. 1 and 2, the keyless entry device according to the present invention comprises a handle escutcheon 21 attached to a door 20, a handle 22 pivotally attached to the handle escutcheon 21 by a shaft 23, A cylinder lock device 25 fixed to the handle escutcheon 21 and a keyhole illumination device 26 provided adjacent to the cylinder lock device 25 are provided. Although not shown, a lock device for locking and unlocking the door 20 is provided in the door 20, and the cylinder lock device 25 can mechanically lock and unlock the lock device by operating a key. Also, a return spring is attached to the shaft 23, and after the handle 22 is manually pulled outward to the pull-up position shown by the dotted line in FIG. 1 and then released from the handle 22, the handle 22 is automatically turned by the elasticity of the return spring. To the initial position. The keyhole illumination device 26 includes a switch device 24 fixed to the handle escutcheon 21 and a light emitting diode 26a provided around a keyhole of the cylinder lock device 25. When the light emitting diode 26a of the keyhole lighting device 26 is configured by a colored light emitting diode such as red, green, yellow, or a mixed color, it is possible to clearly distinguish the lighting / off state of the light emitting diode 26a even in daylight. The handle 22 has an arm 22a attached to a shaft 23, and the arm 22a has a protrusion 22a.
b is provided. The protrusion 22b contacts the switch device 24 when the handle 22 is manually pulled outward.

As shown in FIG. 3, a switch device 24 includes a resin case 30 and a substrate 3 disposed in the case 30.
1 and a switch 32 such as a microswitch, and a case 3
A movable piece 33 having an end protruding from zero and operating the switch 32, a harness 34 connecting the switch 32 to the lock control circuit 40 (FIG. 4), and covering the movable piece 33 to prevent entry of dust and the like. And a rubber cap 35.
The end of the movable spring 32 a protruding from the switch 32 contacts the movable piece 33. When the handle 22 for opening the door 20 is manually pulled outward, the switch 32 generates an operation signal because the protrusion 22b comes into contact with the movable piece 33.

As shown in FIG. 4, the input terminal of the lock control circuit 40 is connected to the switch 32, and the output terminal is connected to the light emitting diode 26a. Further, a motor 27 for operating the door lock device is connected to an output terminal of a lock control circuit 40 through a lock drive circuit 28, and a storage circuit 29 such as a ROM for storing a specific personal identification number is connected to the lock control circuit 4.
Connected to 0. The lock control circuit 40 receives an operation signal of the switch device 24 and gives an operation signal to the keyhole illumination device 26, and also receives an unlock signal from the motor 27 of the lock device when a predetermined signal is received from the switch device 24. Is given. Although not shown, the lock control circuit 40 includes a first timer and a second timer each constituted by a retrigger timer, a third timer for determining a time when the light emitting diode 26a of the keyhole lighting device 26 is turned off, and a password. A code counter for counting the number of codes of each digit of the number and a digit counter for counting the digit number of the personal identification number are provided. The first timer and the second timer start operation when an operation signal of the switch device 24 is received.
Seconds are counted, and the second timer counts one second, for example. The counting time of the first timer is longer than the counting time of the second timer. If the switch 32 is turned on again before the first timer and the second timer have completed counting the predetermined time, the counting of the predetermined time is started by the retrigger function continuously from that point. After receiving the activation signal of the switch device 24, the first timer applies the activation signal to the keyhole lighting device 26 until a first fixed time elapses, and the second timer receives the activation signal of the switch device 24. After that, when the second fixed time has elapsed, the activation signal to the keyhole lighting device 26 is blocked for the third fixed time. The lock control circuit 40 is operated according to the operation sequence shown in the flowchart of FIG.

As shown in FIG. 5, the process proceeds from the start of step 50 to step 51, and when the lock control circuit 40 is installed, the first timer, the second timer, the code counter and the digit counter are initialized. In step 52, the handle 22 is manually pulled outward, and the protrusion 22b is
Contact with the switch 3 of the switch device 24.
It is determined whether or not 2 has operated. When the switch 32 is turned on, the light emitting diode 26a is turned on (step 5).
3). Thereafter, the lock control circuit 40 determines whether the handle 22 has been returned to the initial position and the switch 32 has been turned off (step 54). When the switch 32 is turned off in step 54, the first timer and the second timer are started in steps 55 and 56, and in step 57, the code counter counts the first digit "1".

Thereafter, at step 58, the lock control circuit 40 determines that the first timer
It is determined whether or not seconds have been counted. If 5 seconds have not passed,
In step 59, it is determined whether or not the second timer has counted one second. If one second is not counted, step 60
The lock control circuit 40 returns to the switch 32 because the operator inputs the second signal of the first digit of the password number.
It is determined whether or not is turned on. When the switch 32 is turned on in step 60, the first timer and the second timer are reset in steps 61 and 62, and the process returns to step 54. When the switch 32 is turned off in step 54, the first timer and the second timer start counting the predetermined time again by the retrigger function in steps 55 and 56. In step 57, since the second signal of the first digit of the recitation number has been input, the code counter
Add one digit. Thus, the operations of steps 54 to 62 are repeated by the number of times corresponding to the number of codes of the first digit by the operator. When the operator stops operating the steering wheel 2 for 1 second or more when inputting the second digit code, the second timer times out, but the operation of the steering wheel 2 is stopped for 5 seconds by the first timer. Less than the time to count. Therefore, in step 58, the first timer does not time out, and in step 59, when the second timer times out, in step 63, the light-emitting diode 26a
, For example, for one second, which is a fixed time during which the timer operates. Accordingly, as shown in FIG. 6, each time the second timer counts one second, the light emitting diode 26a turns off, thereby recognizing the operator that the input of the code representing the first digit of the personal identification number has been completed. be able to. However, as shown in FIG. 6, it is not necessary to turn off the light emitting diode 26a after the input of the fourth digit, which is the last digit. Thus, the second
After receiving the activation signal of the switch device 24,
When the second fixed time has elapsed, the operation signal to the keyhole lighting device 26 is blocked for the third fixed time, so that the digit input is completed by turning off the keyhole lighting device 26 even under a heavy traffic noise. Can be recognized. In addition, the keyhole lighting device 2
6, the number of parts can be reduced without the need for a conventional alarm, and the manufacturing cost can be reduced.

Next, at step 64, a code representing the first digit of the recitation number is stored in the code counter, and at step 65, the digit counter counts 1 to record that the first digit has been stored. Thereafter, at step 66, the lock control circuit 40 determines whether or not the digit counter has counted the last n digits. If n digits are not counted, step 67
Proceeds to step 6 after the second timer is reset.
Go to 0. If the switch 32 is not turned on in step 60, the process returns to step 58.

In step 66, when the digit counter has counted n digits, the process proceeds to step 68, where the lock control circuit 4
A value of 0 determines whether the password input by the operation of the switch 32 matches the stored signal stored in the storage circuit 29. If the input signal matches the storage signal in step 68, the lock control circuit 40
Sends an unlock signal to the motor 27 through the lock drive circuit 28. For this reason, the motor 27 operates and the lock device is unlocked. Thereafter, in step 70, the light emitting diode 26a is turned off, and in steps 71 and 72, the code counter and the digit counter are cleared. The process also proceeds to step 70 when the first timer times out in step 58.

[0019]

As described above, according to the present invention, since the keyhole lighting device is turned off after the digit of the recitation number is input, the number of parts is reduced without the need for a conventional alarm device, and the manufacturing cost is reduced. Can be. In addition, since no sound is generated, no noise is generated, and the completion of digit input can be recognized by turning off the keyhole illumination device even under a heavy traffic noise.

[Brief description of the drawings]

FIG. 1 is a sectional view of a door handle device used in a keyless entry device according to the present invention.

FIG. 2 is a front view of a door handle device.

FIG. 3 is a sectional view of a switch device.

FIG. 4 is an electric circuit diagram used for the keyless entry device according to the present invention.

FIG. 5 is a flowchart showing an operation sequence of the lock control circuit.

FIG. 6 is a time chart in which a timer of a lock control circuit operates.

FIG. 7 is a block diagram showing a conventional keyless entry device.

FIG. 8 is a time chart showing the operation of a conventional keyless entry device.

[Explanation of symbols]

20 ・ ・ Door 、 21 ・ ・ Handle escussion 、
22 handle, 22b protrusion, 23 shaft, 24 switch device, 25 cylinder lock device, 26 keyhole lighting device, 26a light emitting diode, 27 motor, 28 motor Lock drive circuit,
29 .. memory circuit, 30 .. case, 32 .. switch, 33 .. movable piece, 40 .. lock control circuit,

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hideyuki Sase 10-1 Higashihonmachi, Ota-shi, Gunma Fuji Heavy Industries Ltd.

Claims (8)

[Claims] 1. A switch device for generating an operation signal by operating a handle for opening a door, a lock device for locking and unlocking the door, a cylinder lock device for mechanically locking and unlocking the lock device, and a cylinder lock device. A keyhole illumination device provided around the keyhole, an activation signal of the switch device is received, an activation signal is given to the keyhole illumination device, and a lock device is released when a predetermined input signal is received from the switch device. A lock control circuit for applying a lock signal, wherein the lock control circuit starts operating when receiving an operation signal of the switch device and counts a first fixed time; A second timer that starts operation when receiving an operation signal of the switch device and counts a second fixed time; and a third timer that counts the second fixed time after the second timer counts the second fixed time.
A third timer that counts a predetermined time of the lock hole. The lock control circuit controls the keyhole lighting device until the first fixed time counted by the first timer elapses after receiving the activation signal of the switch device. When an operation signal is given and a second predetermined time counted by a second timer has elapsed, a third
A keyless entry device, wherein an operation signal to the keyhole lighting device is blocked for a third fixed time counted by the timer, and the first fixed time is longer than the second fixed time. 2. The keyless entry device according to claim 1, wherein the keyhole lighting device is a colored light emitting diode. 3. The first timer and the second timer are connected to a second timer.
2. The retrigger timer according to claim 1, wherein the timer is a retrigger timer which is reset when the switch device is actuated before counting the second fixed time, and starts counting the first fixed time and the second fixed time, respectively. Keyless entry device. 4. The lock control circuit has a code counter for counting the number of codes of each digit of the reciting number, and stores a count value of the code counter when the second timer has counted a second fixed time. The keyless entry device according to claim 1. 5. The lock control circuit according to claim 4, wherein the lock control circuit has a digit counter for counting the digit number of the personal identification number, and when the count value of the code counter is stored, the count value of the digit counter is incremented. Keyless entry device. 6. The keyless entry device according to claim 5, wherein the second timer increments the count value of the digit counter, and is reset when the count value has not reached n digits, and starts counting again for the second fixed time. . 7. The keyless entry device according to claim 4, wherein when the lock control circuit gives an unlock signal to the lock device, the keyhole lighting device is turned off and the code counter is cleared. 8. The keyless entry device according to claim 5, wherein the digit counter is cleared when the lock control circuit gives an unlock signal to the lock device.